The goal of this project was to create a Timer and Stop Watch that uses the UART display, LCD and a push button to interact with the user. The main idea was to understand how to set interrupts to create a 1 second delay to maintain the proper time. Using the Atmega328PB board that was used throughout the semester, and LCD and the built in push button on the Atmega board, the user will be able to select the function for Stopwatch/Timer on the UART, press the push button to begin timer/stopwatch and watch the time count up/down on the LCD. This requires understanding on the registers to set the interrupts and configuring the code to display time in the proper format to the LCD. Later, a RGB led is used to flash from red to rreen to inform the user time is up. The idea was to create a elaborate light display to do so, but because of time constraints, a single RGB led was utilized.